Sewing machine



l A. H. DE vos.

SEWING MACHINE.

APPLICATION FILED MAY 31 |919.

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Patented Jan. 24, 1922.

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SEWING MACHINE. APPLICATION me() MAYa.1919.

1,404,705, Patented Jan. 24, 1922.

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To all toko/m it may4 concern:

Be it known that l, Animer citizen of the United States, residing at YVestlield, in the county of Union and State of New derse have invented certain `new and useful Improvements in Sewing 'Ma-4 chines, of which the following is a specifi- "XD accompanying drawings.

This invention relates to sewing machines and especially to the type thereof used for domestic or household purposes.

lt aims to provide a construction and ar- 'cation, reference beinehad therein to the rangement of head and parts therein which will allow sleeves and circular work to be control the needlethread from within thel overhanging arm so that the arm may be keptclear and free of work thereover.

The construction is applied to a ilat bed machine oi' the family typehaving a mainshaft journaled transversely in its vertical standard which supports an overhanging arm terminating in a dependinghead which is joined to they arinon smooth curved lines. rlhe stitching mechanism comprises a looptaking device ybelow the cloth-plate and a rectilinearly movable needle above the cloth-plate each of which is actuated from the before mentioned main-shaftin the ver` tical standard. t

The needle-bar 4 operating mechanism includes van endwise shitable member which is pivoted Adirectly to the upper end of the` needle-bar whose upper limit of travel falls short of the inside of the head of the machine, the head` being free of projections and unobstructed externally for the ready passage thereover of circular work such as sleeves. A take-up is located adjacent and operated from within the vertical standard where it is accessible for' threading and at such location that no thread lies on the eX- H. DE Von, a 1

Afor the ready p passage j' Specification of Letters Patent. ygateyited Jam. 245i, 1922.

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t rnal surface of the. arm where it would be likely to be broken. i

Thefinvention is illustrated in the acconipanying drawings in which Fig.` 1 is a longitudinal vertical section through the `overhanging arm and partly through the flat cloth-plate of the machine. Fig. 2 is af trans verse vertical section through the `,vertical standard looking towardv the belt-wheel on the main-shaft, and Fig.. 3 vis a bottom plan view of the mechanism beneath the clothplate. l 1 il y j ln the drawings the needle 1 secured to the lower end of a rectilinearly lmovable needle-bar 2 is operated thro-ugh a pivotal connection 3 at its upper end by anendwise shiiitable rocking' member or link 4 sup-` ported and actuated parallel and similar linls 5 and 6 pinnedto an actuating rocklever 7 `on opposite sides respectively of itsl supporting iulcrum pin 8. 'Theroclr-lever Y 7 and endwise shiftable member or link 4i are disposed,` roughly vvspeaking7 in parallelismV and are maintained in such'relation posite end of the linlr` 10 is joined to a bell` crank 15 pivoted on a pin 16 parallel with the fulcrum-pin 8 of the rock-lever, the bellcranlr 15 being connected by a ball-andsocket joint 16 to a rod 17 having'at its opposite end a ball-andsocket connection 13 with a loop-taker 19 and intermediate' driving mechanism indicated generally by the numeral 2O and fully disclosed in patent to pieni Griet, No. ceases, Dee. ii, i900.

On the main-shalt 14C, to the right( of the crank 13 as viewed in Fig. 1, is a cam 21` end appears at 29, may be moved more or f 110 less as desired through the crank-arm 30 on crank 13 on the main-shaft 14,'while the op-iy ,soV

the rock-shaft 3l carrying the feed-rocker 32 and through the feed-dog supporting bar 33 which isadapted to be moved up Vand down intermittently by a cam (not shown) onthe loop-taker shaft as is fully disclosed in patent to Diehl d: Grieb, No. 663,673, Dec. ll, 1900. Specifically the feeding mechanism forms no part ofthe present invention. f

On the main-shaft lil, to the left of the crank 13 as viewed in Fig. l, is fixed a crankarm 34: carrying a crank-pin 35 -actuating an elbow-lever 36 which is hingedat the junction of its arms at 37to a link 3S anchored at 39 to one side of the vertical'standard.

VThe other end ofthe elbow-lever 36 is uniforming mechanism.

Vvhile the invention has vbeen described in its preferred form itis to be distinctly understood that'the invention isV not limited to the specific construction set forth, as the same is only illustrative of the principles of operation which are capable 0fincorporation in metal m various forms, and that the invention comprehends all construction with-l in the scope'of the accompanying' claims.

Having thus set fort-hthe nature of the invention, what I claim herein is Y Y l. In a sewing machine, an overhanging Varm` having a head, a needle-bar mounted to reciprocate in said head, a lever fulcrnmed at a Xed point in its length, means for operating said lever, and a member with direct operative connection to said needle-bar and with intermediate connection'to 'said lever permitting endwise movement of the member relative to the lever while the former is oscillated by the latter.

2. a sewing machine, an overhanging arm havingy a head, a rectilinearly movable needle-bar in said head, a rock-lever, means for operating said rock-lever, and a lever member pivoted adjacent one end directly to said needle-bar whereby said end moves rectilinearly said lever member being actuated by said rock-lever through connections permittingendwise movement 0fthe member relative to the rock-lever.

3. In a sewing machine, an overhangiug arm, a needle-bar mounted to reciprocate in said arm, a lever, means for operating said lever, and a member at one end connected to said needle-bar and at spaced intervals to one side ofsaid end connected by links to said lever.

4l. In a sewing machine, an overhanging arm, -a needle-bar, arlever fulcrnmed intermediate its ends within the overhanging arm, means for operating said lever, Vand a member pivoted directly tosaidneedle-'bar and linked to the lever atfopposite sides of the levers fulcrnm.

5. In a sewing machine, an overhanging arm, a needle-bar mounted to reciprocate therein, a lever fulcrumed intermediateits ends within thearm, means for operating said lever, and a member pivoted directly to said needle-bar and connected by substantially parallel links to said lever.

6. A'needle-bar operatingmechanism forV means connecting said main-shaft and lever for oscillating the latter, a needle -bar mountedfor rectilinear movement within the head and projecting therethrough only from the lower end of the head, a member connected directly to said needle-bar, said member and. lever being. disposed in substantial parallelism entirely within the connes of the overhanging arm, and'means for actuating said member from said leverand maintain-V ing the member and level-in parallelism.

8. In a sewing machine, an overhanging arm, a needle-bar mounted to reciprocate therein, a lever fulcrumed in said arm, means for operating said lever, and a member connected to said needle-bar and at spaced intervals having link connection with said lever.

9. Ina sewing machine, an overhanging arm, a needle-bar mounted to reciprocate therein, a lever fulcrumedat a fixed point in its length Vto said arm, means for Voperating said lever, and means for transmitting movement from said lever to said needle-bar comprisinO a .member connected to said bar and. having a connection with said lever which permits an endwise movementl relative thereto. r

10. In a sewing machine, an overhanging arm having a head,'pa needle, a needle-bar slidably supported in said head, needle-bar operating mechanism housed'within said arm including a link pivoted directly to said needle-bar, a lever fulcrumed intermediate its ends within said overhanging arm, links con-v. necting the opposite ends of said lever with the first-mentioned link, and means for actu- Y ating the said lever. Y y f l o Il. `In a flat-bed Sewing machine, a vertivlli cal standard, an overhanging arm supported by said standard, a depending bead, a bent portion connecting said arm and said depending head, said arm and said depending head and bent portion being externally smooth, upper stitch-forming instrumentalities enclosed within said arm, a main-shaft journaled transversely in said vertical standard intermediate its ends, lower stitcli-ormnaled transversely in said vertical standardV intermediate its ends, lower stitch-forming instrumentalities, a crank-element on said main-shaft, a member slidably connected to said crank-element, and operative connections between said members and each of said upper and llower instrumentalities.

13. In a lat-bed'sewing machine, a vertical standard, an overhanging arm supported l by said standard, adepending head, abent portion connecting said arm yand said depending head, said arm and said depending i -head and bent portions being externally smooth, upper stitch-forming instrumentalities completely enclosed within said arm, a main-shaft journaled transversely in said vertical standard intermediate its ends, lower,k

stitchforming instrnmentalities arranged below the flat-bed, a crank-element on said main-shaft, a member slidably connected intermediate its ends to said crank-element,

levers operatively connected to the ends of said member, and operative connections between eacli of said levers and each of said upper and lower instrumentalities.

" 14:. ln a flatbed sewing machine, a vertical standard an overhan infr arm su ort- 3 t:

ed by said standard, a depending portion, a bent portion connecting said arm and said depending portion, said arm and portionsk being externally 'free of obstructions to the passage'of a tubular article thereover, a nee#r dle, yneedie-operatingV mechanism housed within said arm, a cooperating lock stitch forming instrumentality arranged below the Hat-bed, a main-shaft journaledftransversely in said standard, a take-up housed within said vertical standard, and means connecting said main-sl1aft with said take-np, said needle and said lower lock stitch forming instrnmentality for operating the same to form Y stitches. Y

ln testimony whereof, l have'signedmy name to this specification. Y

ALBERT H. DE VOE. 

